<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>

        .box{
            width: 500px;
            /* height: 100px; */
            /* height: 100vw; */
            height: 500px;
            background-image: url(./file/aHR0cHM6Ly93d3cudjJmeS5jb20vYXNzZXQvMDY1X2h0bWw1X2ppZXR1L2N4ay5naWY.gif);
            background-repeat: repeat;
            background-size: 100px;
            background-position: bottom;
        }
    </style>
</head>
<body>
    <div class="box">

    </div>
</body>
</html>